I don't think it has anything to do with being gelded and I don't think what you are describing actual means he was being mean. He was being a 2yo horse
When I think about it, I don't think I own a horse (out of 19) who has not at one time or another played hard to catch. They just do that sometimes, especially when they are young horses.
It may have even "started" because he had a horse fly or something on him...
If it gets to be a problem, where he does not want to be caught, what has worked for me is that as I approach the hard to catch horse, if he/she makes even a twitch like they're going to run, I make them run. I even use a lunge whip. I don't let the horse stop for a bit, then try and approach again saying "woah" low and slow. If it stands still, good, we are done and I halter the horse. If not and there's any indication of not standing still for me to approach, I run the horse again and don't let it stop until I'm ready to give it another chance to stand. If you do this, they learn really fast (one or two times in my experience) to just stand there when you say woah and let you catch them.
The time I had to do this with my Morgan, who had turned "catch me if you can" into a game, it only took 1x and he has not EVER run from me since. But, by the time I was done that first time, his nostrils were flaring and he had STEAM rising off his body!!! Right after that, he had gotten untied when I had tied him to tack him up. He was walking around the barn paddock and I didn't want to say anything because I thought if I opened my mouth to him, I'd start yelling at him (thinking the running him had actually failed and it was SO frustrating to spend 30 minutes chasing a horse to ride it for 15...). I just kept walking to him and he'd slowly trot off about 30 feet then stop until I got close, then trot off again. I wasn't saying a word knowing when I did, I'd loose it. Finally, I just said "ROCKET COME HERE!" and he did!!!!! He had a smug look on his face like "well, why didn't you say that in the first place." He marched right to me. The lady I bought him from swears he's the smartest horse she has ever known and I think it's probably the truth!